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Finding the Third Proportional to 468 and 711.75

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Solution

The third proportional to 468 and 711.75 is: 1,082.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    468 : 711.75 = 711.75 : x
  2. Step 2: Convert to fraction form
    468/711.75 = 711.75/x
  3. Step 3: Cross multiply
    468x = 711.75 × 711.75
  4. Step 4: Simplify right side
    468x = 506,588.06
  5. Step 5: Solve for x
    x = 506,588.06/468
  6. Step 6: Final answer
    x = 1,082.45

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.